package day05;

public class txt16 {
    public static void main(String[] args) {
        int month=6;
        switch (month){
            case 1:
            case 3:
            case 5:
            case 7:
            case 8:
            case 10:
            case 12:
                System.out.println("31天");break;
            case 4:
            case 6:
            case 9:
            case 11:
                System.out.println("30天");break;
        }
    }
}
